I don’t have access to MATLAB now but I don’t think you can do that in a vectorized way. Without seeing your code, I am not sure what you’ve actually tried. I recommend a for loop, first pre-allocating the output or using something like arrayfun. If you can’t get either of those to work, please contact technical support.

–Loren

though it seems to create it properly, it produces the error:
“conversion to double from cell is not possible”

thank you,
eva

importdata might not be your best option. textscan MIGHT be more appropriate, I am not sure.

But to answer your question about indexing into cells, here’s the way.

If C is your Nx1 cell, to get the mth character from the nth line, do the following C{n}(m) – curly braces first to get the contents of the nth row, then smooth parens to index into that array.

–Loren

Date: Mon Dec 05 13:38:15 2011
13:38:16 90 EB 30 00 BA 01 E6 01 B6 02 35 00 3E 0B E6 05 EB
13:38:17 90 EB 30 00 BA 01 E7 01 A2 02 21 00 3E 0B FF 05 EB
13:38:18 90 EB 30 00 BA 01 E8 01 B6 02 21 00 3E 0B E6 05 00
etc.

So once I import the data into matlab using importdata I get a Nx1 cell array with N being the number of lines in the input data file. How do I index to each individual character in each line. I need to do this so I can concatenate multiple individual characters.

After doing the concatenate I will then convert the concatenated hex strings?? to decimal.

Thnaks,
willie

Check out the function cell2mat: http://www.mathworks.com/help/techdoc/ref/cell2mat.html

–Loren

would you help me in converting a cell array into a numeric array

in my project i am dividing an image into blocks using mat2cell and make some analysis on each block

i need to convert each block into a numeric array

Thank you in advance

Take a look at cellfun.

–Loren

This is a really simple question, hopefully you can help..

I have a cell array, where each cell contains a numeric vector of varying length, and just want to multiply everything by a constant. How?

Thanks,
Hannah

newArray = [C{:}];

What this does is make a comma separated list of the array values in each cell, e.g., C{1},C{2},…,C{N} and then places these into a regular array because of the surrounding square brackets. newArray then is:

[values in C(2),values in C(2),...] or
[ 1x8, 1x 12, 1x 3, 1x30] —- or length 53

There is good user documentation on this. I suggest you check out the doc and look for comma-separated lists.

–Loren

Thank you for your prompt reply and my tmp cell array is dynamic length with dynamic size depend on the user mouse click on the image.

e.g
tmp1 = [8×1 double];
tmp2 = [12×1 double];
tmp3 = [3×1 double];
tmp4 = [30×1 double];

then I want to have all these sum of cell arrays as one array finally like below.
% Here sum of all cell arrays from the beginning to end
tmp = [53x1 double];

So,I didn’t know the final length then how should I set the dynamic end point in the structure.

Pls advise me and I really appreciate your help.

Thanks and best regards
Kyaw